Add test class for kube_app AppOperator

Add test class and setup method.
Mock method/operator will be added in individual commits which use
that method or operator.

Story: 2007082
Task: 37998

Change-Id: I60a4b235417f288adb4a13577b9779d79169a233
Signed-off-by: Mingyuan Qi <mingyuan.qi@intel.com>

sysinv/sysinv/sysinv/sysinv/tests/conductor/test_kube_app_app_operator.py

@@ -0,0 +1,24 @@
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Copyright (C) 2020 Intel Corporation
+#
+
+"""Test class for Sysinv kube_app AppOperator."""
+
+from sysinv.conductor import kube_app
+from sysinv.db import api as dbapi
+from sysinv.openstack.common import context
+
+from sysinv.tests.db import base
+
+
+class AppOperatorTestCase(base.DbTestCase):
+
+    def setUp(self):
+        super(AppOperatorTestCase, self).setUp()
+
+        # Set up objects for testing
+        self.app_operator = kube_app.AppOperator(dbapi.get_instance())
+        self.context = context.get_admin_context()
+        self.dbapi = dbapi.get_instance()